5305-01-398-3578

Find complete technical information, availability, and procurement data for: 5305-01-398-3578
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-398-3578

Item Name Code

18257

Assigment Date

10/31/1994 (31 years ago)

A deformable material which prevents the passage of matter through the joint formed when two faces are joined. It may be metallic or nonmetallic, lubricated or impregnated, solid or hollow cross section. It may be made to any predetermined dimension and shape. Excludes:flat disks, items made of felt material and items having joints. For round metal and plastic items with an aperture and a solid rectangular cross section, see washer, flat; shim; bearing, washer, thrust; and spacer ring. Excludes:disk, valve; seal, nonmetallic angle; seal, nonmetallic channel; seal, nonmetallic special shaped section; shielding gasket, electronic; and ring, sealing jar.

0.875 inches minimum and 1.153 inches maximum thread length, 1.970 inches minimum and 2.030 inches maximum fastener length, 2a thread class, hexagon head style, right-hand thread direction

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Thread Class: 2a
Thread Direction: right-hand
Thread Length: 0.875 inches minimum and 1.153 inches maximum
Fastener Length: 1.970 inches minimum and 2.030 inches maximum
Head Style: hexagon
Head Height: 0.195 inches minimum and 0.211 inches maximum
Width Between Flats: 0.489 inches minimum and 0.500 inches maximum
Nominal Thread Diameter: 0.312 inches
Thread Quantity Per Inch: 24
Material: steel overall
Material Document And Classification: g-300-m, cage 24617 mfr ref single material response overall
Surface Treatment: zinc overall
Surface Treatment Document And Classification: g-4342-m, cage 24617 mfr ref single treatment response overall
Thread Series Designator: unf

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
9421948	Hexagon Head Cap Screw

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 5305-01-398-3578?

The FSCG of the NSN 5305-01-398-3578 is 5305

Does the NSN 5305-01-398-3578 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-398-3578 require demilitarization?

Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 5305-01-398-3578 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-398-3578 contain hazardous materials?

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

When the NSN 5305-01-398-3578 was assigned to the Federal Catalog?

It was assigned 31 years ago, on Mon, Oct 31, 1994